解决 ImportError: cannot import name '__version__'_cannot import name strictversion

使用brew升级python后，报了command not found: pip3的错误，并且使用pip时会出现另外一个错误：

Traceback (most recent call last):
File “/usr/local/bin/pip”, line 7, in
from pip._internal import main
File “/usr/local/lib/python3.6/site-packages/pip/_internal/init.py”, line 41, in
from pip import version
ImportError: cannot import name ‘version’

解决办法：

wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
1
2

此时pip2能够成功执行
但是pip3仍然会报command not found: pip3的错误

wget https://pypi
1